EP0497780B1 - Procede de cintrage oppose d'une tole - Google Patents

Procede de cintrage oppose d'une tole Download PDF

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Publication number
EP0497780B1
EP0497780B1 EP90913054A EP90913054A EP0497780B1 EP 0497780 B1 EP0497780 B1 EP 0497780B1 EP 90913054 A EP90913054 A EP 90913054A EP 90913054 A EP90913054 A EP 90913054A EP 0497780 B1 EP0497780 B1 EP 0497780B1
Authority
EP
European Patent Office
Prior art keywords
bending
cheek
sheet metal
length
bending cheek
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90913054A
Other languages
German (de)
English (en)
Other versions
EP0497780A1 (fr
Inventor
Wolfgang Kutschker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reinhardt Maschinenbau GmbH
Original Assignee
Reinhardt Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6392261&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0497780(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Reinhardt Maschinenbau GmbH filed Critical Reinhardt Maschinenbau GmbH
Priority to AT90913054T priority Critical patent/ATE96062T1/de
Publication of EP0497780A1 publication Critical patent/EP0497780A1/fr
Application granted granted Critical
Publication of EP0497780B1 publication Critical patent/EP0497780B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/042—With a rotational movement of the bending blade

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 2, as are known from document EP-A-0338949.
  • the bending beam can only be used in one working direction, that is to say, for example in the case of a pivoting movement from bottom to top in a clockwise direction.
  • a folding machine with machine frame, lower beam, upper beam and bending beam for carrying out the method according to the invention is characterized in that a first rocker is provided on both ends of the bending beam, which is pivotable about the pivot axis of the bending beam that a second rocker on the first rocker is movably mounted, and that a guide is provided on the second rocker which permits a substantially rectilinear movement of the bending beam running perpendicular to the pivot axis, which in turn runs essentially perpendicular to the direction of movement of the second rocker.
  • Figures 1 to 8 each schematically show the essential parts of a folding machine, namely a lower beam 1, an upper beam 2 and a bending beam 3.
  • Die Bending beam 3 is rotatably mounted on the machine frame (not shown) and can be pivoted about a pivot axis S, which in FIGS. 1 to 8 runs perpendicular to the plane of the drawing.
  • a sheet 4 is clamped by lowering the upper cheek 2 in the direction of arrow A, which protrudes with a sheet metal section 5 over the cheeks 1, 2.
  • the bending cheek 3 engages with its upper or bending surface on the underside of the sheet metal section 5.
  • This side is also called the first side of the sheet 4 in the following, it is opposite the upper or second side of the sheet 4.
  • FIG. 1 shows the initial state of the bending process.
  • the bending beam 3 - cf. Figure 2 pivoted counterclockwise by 90 ° upwards (arrow B), whereby the sheet metal section 5 is also bent counterclockwise upwards.
  • Figure 4 - unhindered around this bent sheet metal section 5 can be pivoted further upwards (arrow D) until after a pivoting by a total of about 180 ° the second or upper side of the sheet 4 is turned.
  • the pivoting beam 3 according to FIG.
  • this adjustment direction (arrow E) runs perpendicular to the plane containing the first adjustment direction (arrow C) and the pivot axis S. In FIG. 5, this plane runs perpendicular to the plane of the drawing and parallel to arrow C.
  • the sheet metal section 5a is bent in the opposite direction to the sheet metal section 5 by pivoting the bending cheek 3 by 90 ° in the direction of the arrow F downward or clockwise.
  • the sheet 4 bent in the opposite direction at its edge can now be removed from the folding machine.
  • the swivel bending machine is brought back into its starting position according to FIG. 1 by correspondingly adjusting the bending cheek 3 along the arrows E and F.
  • the bending beam 3 acts on the first sheet metal side during the first bending process and on the second sheet metal side during the second bending process, as can be seen from FIGS. 1 and 7.
  • the adjustment of the bending beam 3 in the first adjustment direction is necessary in order to be able to transfer the bending beam 3 from the first to the second sheet metal side via the bent sheet metal section 5.
  • the bending beam 3 passes over the projecting part of the upper beam 2, the bending beam 3 must also move in the second direction of adjustment in the direction of arrow E. can also be adjusted (cf. FIG.
  • FIG. 9 schematically shows a folding machine 10 which is structurally set up in such a way that the bending method explained with reference to FIGS. 1 to 8 can be carried out on it.
  • FIG. 9 shows only the right side of such a folding machine 10 in a front view. The other side is correspondingly mirror-symmetrical.
  • FIG. 9 the upper beam 2 and the bending beam 3, which are mounted on a machine frame, are shown.
  • the bending beam 3, which can be pivoted about the pivot axis S hides the lower beam 1, which is also mounted in the machine frame 11 and is visible in FIGS. 1 to 8.
  • the upper cheek 2 is for tensioning and releasing the sheet 4 in the direction of arrow G, which corresponds to the arrows A and A1 in Figure 1 and 6, up and down.
  • the upper beam 2 is connected to a hydraulic cylinder 12 attached to the machine frame 11.
  • the pivoting movement of the bending cheek 3 about the pivot axis S is indicated in FIG. 9 by the arrows H, which correspond to the arrows B, D, F in FIGS. 2, 4 and 8.
  • the bending cheek 3 is pivoted with the aid of a motor 13 fastened to the machine frame 11. This engages with a first rocker 14 pivotably mounted about the pivot axis S and can pivot it back and forth perpendicular to the plane of the drawing in FIG.
  • a second rocker 15 is rotatably mounted on the first rocker 14 about an axis 15. The axis 15 lies below the pivot axis S.
  • a piston-cylinder unit 18 is provided, the cylinder 19 of which is rigidly connected to the bending cheek 3 and the piston rod 21 of which is connected to the foot 17 , The cylinder 19 can also be guided in a straight line along the arrows I on the second rocker 16.
  • the piston-cylinder unit 18 thus forms a guide for the bending beam 3 in such a way that when the unit 18 is actuated, the bending beam 3 can be displaced in a straight line relative to the second rocker 16, namely away from the pivot axis S or onto it Axis too.
  • This first adjustment movement of the bending beam 3 is shown by the arrows I, which correspond to the arrows C, C1 in Figure 3 and 7 respectively.
  • the second adjustment movement mentioned above which is perpendicular to the plane containing the first adjustment direction I and the pivot axis S (drawing plane of FIG. 9), is realized with the aid of the second rocker 16. If this is pivoted about the axis 15 with the aid of a drive motor 22 indicated by dashed lines in FIG. 9, the bending beam 3 or at least its working surface engaging on the sheet to be bent is adjusted perpendicular to the plane of the drawing in FIG. 9 in accordance with the arrow E in FIG. 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

Un procédé de cintrage opposé d'une tôle comprend les opérations suivantes: on applique la joue de pliage d'une machine à cintrer oscillante sur une première face d'un tronçon de tôle et l'on plie celui-ci, selon un angle prédéterminé, dans un premier sens de rotation; on retire ensuite du tronçon de tôle replié, la joue de pliage dans un premier sens de déplacement, perpendiculairement à son axe de pivotement et l'on continue de l'incliner, dans le premier sens de rotation, jusqu'à ce qu'elle soit tournée vers la deuxième face de la tôle opposée à la première face; on déplace la joue de pliage dans un deuxième sens de déplacement perpendiculaire au premier; on applique la joue de pliage, après déplacement correspondant de la tôle repliée entre la joue inférieure et la joue supérieure de la machine à cintrer, sur la deuxième face de la tôle et l'on plie celle-ci selon un angle prédéterminé, par pivotement de la joue de pliage dans un deuxième sens de rotation opposé au premier. Dans la machine à cintrer pour la mise en ÷uvre de ce procédé, la joue de pliage est montée de manière à pouvoir exécuter deux mouvements perpendiculaires entre eux dans les premier et deuxième sens de déplacement.

Claims (2)

  1. Procédé pour plier une tôle (4) dans deux sens opposés, au moyen d'une machine à plier à mouvement de pivotement, dans lequel la tôle (4) est pincée entre un serre-flan inférieur (1) et un serre-flan supérieur (2), et la partie (5) de la tôle qui dépasse au-delà de ces serre-flans est rabattue d'un angle de pivotement prédéterminé, à l'aide d'une lame de pliage (3) qui attaque cette partie (5) de la tôle, et qu'on peut faire pivoter autour d'un axe de pivotement (S), procédé dans lequel, dans une première phase, on applique la lame de pliage (3), par une surface de pliage prévue sur elle, contre une première face de la partie dépassante (5) de la tôle, et on rabat cette partie de la tôle d'un angle prédéterminé par pivotement de la lame de pliage (3) dans un premier sens de rotation (B), après quoi, dans une deuxième phase, on applique la lame de pliage (3) contre une deuxième face, opposée à la première, de la partie (5) de la tôle qui a été avancée de façon voulue entre le serre-flan inférieur (1) et le serre-flan supérieur (2), et on fait pivoter la lame de pliage (3) dans un sens de rotation opposé au premier sens, et dans lequel, entre la première phase et la deuxième phase, on rétracte la lame de pliage (3) de la partie (5) de la tôle qui a été pliée, dans une direction de déplacement perpendiculaire à son axe de pivotement (S),
    caractérisé par les autres phases suivantes :
    a) après son retrait par rapport à la partie (5) de la tôle qui a été pliée, on continue à faire pivoter la lame de pliage (3) dans le premier sens de rotation jusqu'à ce qu'après un pivotement de 180° au total, elle présente la même surface de pliage qui a déjà été utilisée dans la première phase vers la deuxième face de la tôle (4), qui est à l'opposé de la première face de la tôle (figures 3 et 4);
    b) on déplace maintenant la lame de pliage (3) dans une deuxième direction de déplacement (E) orientée sensiblement perpendiculairement au plan qui contient la première direction de déplacement (C) et l'axe de pivotement (S), de telle sorte que, par déplacement dans la première direction de déplacement (figure 5), la lame de pliage (3) peut être appliquée contre la deuxième face de la tôle (4) par sa même surface de pliage précitée ;
    c) enfin, après une translation appropriée de la tôle pliée (5) (figure 6) entre le serre-flan inférieur (1) et le serre-flan supérieur (2), on applique la lame de pliage (3), de nouveau par la même surface de pliage précitée, contre la deuxième face de la partie dépassante (5) de la tôle, par un déplacement (C1) effectué dans la première direction de déplacement, et on rabat cette partie, d'un angle prédéterminé, par pivotement de la lame de pliage (3) dans le deuxième sens de rotation (F) qui est opposé au premier sens de rotation (figures 7 et 8).
  2. Machine à plier à mouvement de pivotement, comprenant un bâti, un serre-flan inférieur (1), un serre-flan supérieur (2) et une lame de pliage (3), pour la mise en oeuvre du procédé selon la revendication 1, caractérisée en ce qu'à chacune des faces d'extrémité de la lame de pliage (3), est prévu un premier bras oscillant (14) qui peut pivoter autour de l'axe de pivotement (S) de la lame de pliage (3), en ce qu'un deuxième bras oscillant (16) est articulé sur le premier bras oscillant (14), et en ce que, sur le deuxième bras oscillant (16), est prévu un guide (18) qui permet un déplacement sensiblement rectiligne de la lame de pliage (3), orienté perpendiculairement à l'axe de pivotement (S), et qui, de son côté, s'étend sensiblement perpendiculairement à la direction du mouvement du deuxième bras oscillant (16).
EP90913054A 1989-10-26 1990-08-30 Procede de cintrage oppose d'une tole Expired - Lifetime EP0497780B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90913054T ATE96062T1 (de) 1989-10-26 1990-08-30 Verfahren zum gegenlaeufigen biegen eines bleches.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3935658A DE3935658A1 (de) 1989-10-26 1989-10-26 Verfahren zum gegenlaeufigen biegen eines bleches
DE3935658 1989-10-26

Publications (2)

Publication Number Publication Date
EP0497780A1 EP0497780A1 (fr) 1992-08-12
EP0497780B1 true EP0497780B1 (fr) 1993-10-20

Family

ID=6392261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90913054A Expired - Lifetime EP0497780B1 (fr) 1989-10-26 1990-08-30 Procede de cintrage oppose d'une tole

Country Status (7)

Country Link
EP (1) EP0497780B1 (fr)
JP (1) JP3122126B2 (fr)
CA (1) CA2067732C (fr)
DE (2) DE3935658A1 (fr)
DK (1) DK0497780T3 (fr)
ES (1) ES2046795T3 (fr)
WO (1) WO1991006383A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047108A1 (de) * 2006-09-27 2008-04-03 Ras Reinhardt Maschinenbau Gmbh Biegemaschine
WO2014206817A1 (fr) 2013-06-27 2014-12-31 Ras Reinhardt Maschinenbau Gmbh Dispositif de manipulation et installation de pliage ainsi que procédé de pliage d'une pièce à plier

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007039848B4 (de) * 2007-08-23 2009-10-15 Hans Schröder Maschinenbau GmbH Schwenkbiegemaschine zum Gegenbiegen eines Werkstücks aus Blech
JP6269514B2 (ja) * 2015-01-13 2018-01-31 トヨタ自動車株式会社 動力線の曲げ加工方法
KR101933532B1 (ko) 2018-09-28 2018-12-28 한용운 고속회전형 패널 절곡장치 및 이를 이용한 패널 절곡방법
DE102019008118B4 (de) * 2019-11-21 2022-09-15 Wolfram Hochstrate Schwenkbiegemaschine insbesondere zum Gegenbiegen mit einer Duplex-Biegewange
CN111036737B (zh) * 2019-11-26 2021-08-27 歌尔股份有限公司 弯折压合装置及弯折压合方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH392434A (de) * 1963-08-13 1965-05-31 Puell Werner Von Lagerung für lange Biegeladen an Abkantmaschinen
FR2502518A1 (fr) * 1981-03-26 1982-10-01 Favrin Pierre Machine pour le pliage de toles en aller et retour sur plieuse
FR2597398B1 (fr) * 1986-04-16 1990-12-07 Favrin Pierre Presse plieuse a tablier pivotant
FR2630356A1 (fr) * 1988-04-20 1989-10-27 Dimeco Alipresse Machine a plier les toles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047108A1 (de) * 2006-09-27 2008-04-03 Ras Reinhardt Maschinenbau Gmbh Biegemaschine
DE102006047108B4 (de) * 2006-09-27 2009-09-10 Ras Reinhardt Maschinenbau Gmbh Biegemaschine zum Biegen von Flachmaterial
WO2014206817A1 (fr) 2013-06-27 2014-12-31 Ras Reinhardt Maschinenbau Gmbh Dispositif de manipulation et installation de pliage ainsi que procédé de pliage d'une pièce à plier
DE102013106764A1 (de) 2013-06-27 2014-12-31 Ras Reinhardt Maschinenbau Gmbh Handhabungsvorrichtung und Biegeanlage sowie Verfahren zum Biegen eines Biegeteils

Also Published As

Publication number Publication date
EP0497780A1 (fr) 1992-08-12
DE3935658A1 (de) 1991-05-02
ES2046795T3 (es) 1994-02-01
CA2067732C (fr) 2000-02-15
WO1991006383A1 (fr) 1991-05-16
CA2067732A1 (fr) 1991-04-27
DE59003171D1 (de) 1993-11-25
JP3122126B2 (ja) 2001-01-09
JPH05500774A (ja) 1993-02-18
DK0497780T3 (da) 1993-11-29

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